| Message ID | 20231024010925.3949910-7-imre.deak@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915: Improve BW management on MST links | expand |
On Tue, Oct 24, 2023 at 04:09:02AM +0300, Imre Deak wrote: > Add the DPCD flag to enable DSC passthrough in a last branch device, > used in a follow-up i915 patch. > > Also add a flag to detect HBLANK expansion support in a branch device, > used by a workaround in a follow-up i915 patch. > > Cc: Lyude Paul <lyude@redhat.com> > Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> > --- > include/drm/display/drm_dp.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h > index e69cece404b3c..763d45a612f35 100644 > --- a/include/drm/display/drm_dp.h > +++ b/include/drm/display/drm_dp.h > @@ -148,6 +148,7 @@ > #define DP_RECEIVE_PORT_0_CAP_0 0x008 > # define DP_LOCAL_EDID_PRESENT (1 << 1) > # define DP_ASSOCIATED_TO_PRECEDING_PORT (1 << 2) > +# define DP_HBLANK_EXPANSION_CAPABLE (1 << 3) > > #define DP_RECEIVE_PORT_0_BUFFER_SIZE 0x009 > > @@ -699,6 +700,7 @@ > > #define DP_DSC_ENABLE 0x160 /* DP 1.4 */ > # define DP_DECOMPRESSION_EN (1 << 0) > +# define DP_DSC_PASSTHROUGH_EN (1 << 1) > #define DP_DSC_CONFIGURATION 0x161 /* DP 2.0 */ > > #define DP_PSR_EN_CFG 0x170 /* XXX 1.2? */ > -- > 2.39.2 >
diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h index e69cece404b3c..763d45a612f35 100644 --- a/include/drm/display/drm_dp.h +++ b/include/drm/display/drm_dp.h @@ -148,6 +148,7 @@ #define DP_RECEIVE_PORT_0_CAP_0 0x008 # define DP_LOCAL_EDID_PRESENT (1 << 1) # define DP_ASSOCIATED_TO_PRECEDING_PORT (1 << 2) +# define DP_HBLANK_EXPANSION_CAPABLE (1 << 3) #define DP_RECEIVE_PORT_0_BUFFER_SIZE 0x009 @@ -699,6 +700,7 @@ #define DP_DSC_ENABLE 0x160 /* DP 1.4 */ # define DP_DECOMPRESSION_EN (1 << 0) +# define DP_DSC_PASSTHROUGH_EN (1 << 1) #define DP_DSC_CONFIGURATION 0x161 /* DP 2.0 */ #define DP_PSR_EN_CFG 0x170 /* XXX 1.2? */
Add the DPCD flag to enable DSC passthrough in a last branch device, used in a follow-up i915 patch. Also add a flag to detect HBLANK expansion support in a branch device, used by a workaround in a follow-up i915 patch. Cc: Lyude Paul <lyude@redhat.com> Signed-off-by: Imre Deak <imre.deak@intel.com> --- include/drm/display/drm_dp.h | 2 ++ 1 file changed, 2 insertions(+)